refactor: ensure prerender routes start with a forward slash and update package resolution to use createRequire

This fixes broken e2e tests

Author: alan-agius4

packages/angular_devkit/build_angular/src/builders/app-shell/index.ts

@@ -82,10 +82,11 @@ async function _renderUniversal(
         localeDirectory,
       );
 
+      const route = options.route;
       let html: string = await renderWorker.run({
         serverBundlePath,
         document: indexHtml,
-        url: options.route,
+        url: route?.[0] === '/' ? route : '/' + route,
       });
 
       // Overwrite the client index file.

packages/angular_devkit/build_angular/src/builders/prerender/index.ts

@@ -209,7 +209,7 @@ async function _renderUniversal(
               inlineCriticalCss: !!normalizedStylesOptimization.inlineCritical,
               minifyCss: !!normalizedStylesOptimization.minify,
               outputPath,
-              route,
+              route: route[0] === '/' ? route : '/' + route,
               serverBundlePath,
             };
 

packages/angular_devkit/build_angular/src/tools/webpack/utils/helpers.ts

@@ -9,6 +9,7 @@
 import type { ObjectPattern } from 'copy-webpack-plugin';
 import glob from 'fast-glob';
 import { createHash } from 'node:crypto';
+import { createRequire } from 'node:module';
 import * as path from 'node:path';
 import type { Configuration, WebpackOptionsNormalized } from 'webpack';
 import {
@@ -314,7 +315,8 @@ export function getStatsOptions(verbose = false): WebpackStatsOptions {
  */
 export function isPackageInstalled(root: string, name: string): boolean {
   try {
-    require.resolve(name, { paths: [root] });
+    const resolve = createRequire(root + '/').resolve;
+    resolve(name);
 
     return true;
   } catch {